Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
Compatible with 3.6.*
Compatible with session manager.
Optimized tab operation.
Improved display of ContextMenu.
Fixed problem with default theme of MacOSX.
Added extension's icon!(many thanks arthur)
Fixed problem with FF1.5.x
Fixed problem with TabMixPlus. (thanks LouCypher)
Fixed close button bug.